摘要
采用自蔓延燃烧法制备CuCr2O4,以硝酸铜、硝酸铬为原料,添加柠檬酸、尿素和PEG200配制混合溶液,借助自主设计的自蔓延燃烧合成炉实现了浓缩溶液的连续自蔓延燃烧。通过调整PEG200加入量,获得了高度蓬松的无定型态燃烧产物。对燃烧产物进行煅烧处理,研究了煅烧温度、升温速率、保温时间等工艺参数对样品物相组成和微观形貌影响。经15℃/min升温至950℃保温0.5~1.0 h煅烧处理,燃烧产物转化为晶体结构完整、粒径分布在亚微米范围的CuCr2O4亚微米晶,所得CuCr2O4粉体特别适合作为铜铬黑颜料推广应用。
CuCr2O4 was prepared via a self-propagating combustion method.A mixed solution of cupric nitrate,chromium nitrate,citric acid,urea and PEG200 was ignited in a self-propagating combustion furnace.A highly fluffy amorphous combustion product was obtained by adjusting the amount of PEG200.The combustion product was calcined in a muffle furnace,and the effects of calcination temperature,heating rate and holding time on the phase composition and morphology of the samples were investigated.The combustion product transforms into CuCr2O4 submicron-sized crystals with an uniform size distribution after calcination at 950℃ for 0.5–1.0 h with a heating rate of 15℃/min.The CuCr2O4 powder obtained is suitable for application as a copper chrome black pigment.
作者
郑华德
艾树鹤
王永珍
ZHENG Huade;AI Shuhe;WANG Yongzhen(School of Materials Science and Engineering, South China University of Technology, Guangzhou 510006, China;National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006,China;Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou 510006, China;Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou 510006, China;Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou 510006, China;South China Institute of Collaborative Innovation, Dongguan 523808, Guangdong, China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2019年第6期818-825,共8页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金面上项目(51472089)
广东省自然科学基金(2018A030313803)
中央高校基本科研业务费自然科学类资助项目(2018KZ15)
东莞市社会科技发展项目(2016108101027)
关键词
铬酸铜
黑色颜料
自蔓延燃烧法
亚微米晶
copper chromate black pigment
self-propagating combustion
submicron crystal
